Frequency estimation is a critical aspect of modern signal processing, underpinning advances in communications, radar, biomedical imaging and many other fields. At its core, this discipline seeks to ...

Sound can be represented with both analog or digital audio signals. Analog audio signals use electrical voltage levels. Different types of transducers convert sound to electrical signals and ...

Radio telescopes are instruments that capture faint radio signals from space and convert them into images of celestial bodies ...

I designed the circuit in Figure 1 as a part of a data transmission system that has a carrier frequency of 400 kHz using on-off keying (OOK) modulation. I needed to detect the presence of the carrier ...

Radio telescopes let you study the universe by collecting faint radio waves from distant objects. To see extremely small ...

For many scientific experiments, today’s researchers require a precise reference frequency that allows them to calibrate the time measurements made by their equipment. Such experiments include ...

The disc-shaped resonator measures less than 2 centimeters across, yet the innocuous device is eavesdropping on spacetime. It’s a newly built acoustic wave resonator, and in its first 153 days of ...